Feed-head for drilling-machines.



PATENTED MAR. 19, 1907'.

a. D. WILLIAMS. FEED HEAD FOR DRILLING MAGHIN Arrnloulonnpnn NOV. 9} 1906.

2 SHEETS-SHEET 1. m

No. 847,450. PATENTEDXMAR. 19, 1907.

G. n. WILLIAMS 'PEBD HEAD FOR DRILLING MACHINES.

' APPLICATION FILED NOV. 9, 1906.

UNITE srxrns rnnr orrion FEED-HEAD FOR DRILLING-MACHINES.

Application filed November 9 Specification of Letters Patent.

,1906. Serial No. 342.621.

Patented March 19, 1907.

To all whom it vncty concern: Be it known that I, GRIFFITH D. WILLIAMS, a citizen of the United States, and a resident said threaded extensions being considerably less than a half-nut, whereby a greater threaded bearing is afforded for the feed-screw, an

of Peckville, in the county of Lackawanna, also affording means of cleaning the threads State of Pennsylvania, have invented certain i thereof. Other features of the invention renew and useful Improvements in Feed-Heads i late to details hereinafter duly pointed out.

for Drilling-Machines, of which the following n the drawings, 1 is a clevis having a stem is a full, clear, and exact description, refer- 2 for mounting the same upon the usual ence being had to the accompanying drawdrill-stand. One of thelimbs 3 of the clevis 1 ings, of which is provided adjacent its free end with a hole Figure 1 is a bottom plan viewof my im- 4:, and the other limb 5 of the clevis 1 is proproved feed-head. Fig. 2 is an elevation of vided with an approximately V-shaped slot the inner half-nut-carrying member detached. 6, as shown most clearly in Figs. 5 and 7, and

Fig. 3 is a view similar to Fig. 2 of the other for a purpose hereinafter appearing. x-

half-nut-carrying member detached. Fig. 4: tending through the hole 4 is a trunnion 7,

is a horizontal section looking in the same dil extending outwardly from a bar 8, the diamerection as Fig. 1 and taken on aline medially i ter of which trunnion is such as to fit the of the half-nut-earrying members. Fig. 5 is depth of said hole, so as to find a bearing a perspective view of the preferred form of i therein; but the hole is elongated laterally of clevis, (being the form shown in Figs. 1 and l the limb 3, for a purpose hereinafter appear- 4,) the half-nut-carrying members having ing. Within a U-shaped depression 9 of the been removed. Fig. 6 is a view similar to bar 8 is seated and secured, by means of a Fig. 5 of a modified form of clevis. Fig. 7 is bolt 10, a half-nut or nut-section 11. This avertical section on the line at 20,Fig. 1. Fig. nut-section 11 is provided with flanges 12-, o 8 is a vertical section on the line y y, Fig. 1. that straddle the sides of the bar 8 to pre This invention relates to improvements in l vent longitudinal displacement of said halffeed-heads for drilling-machines, and more i nut. Extending outwardly from the bar 8 particularly to the class of feed-heads a type and through the slot 6 is an arm 13, whose of which is shown and described in Unite upper surface is substantially plane and 5. States Letters Patent No. 667 ,277 granted whose under surface where it engages the to me February 5, 1901. lower wall of said slot 6 is substantially The object of my present invention is to semicircular in cross-section, as seen in Fig. provide a feed-head of the type referred to 7. The bar 8 is provided with a hole 14, which shall be simple in construction an through which passes a pin or shaft 15, 9 which may be readily and easily operated. which pin or shaft 15 also passes through To this end the invention consists in probosses 16, extending from the bar 17, thereviding a feed-head of this type in which the by pivotally securing said bar 17 to the bar 8. halfnut-carrying members or sections are so The bar 17 is provided on its under surface connected to each other'and so mounted in a with two half-nuts 18, that are out of aline suitable supporting clevis or frame that any ment with the half-nut 11 upon bar or -wear, either of their screw-threads or of the member 8. The bar 17 is provided at its free threads of the feed-screw of the drill, will be end with an arm 19, which is complementary automaticallytaken up, thus always insuring and similar to the arm 13, extending from a perfect mesh between the feed-screw and the bar 8. The semicircular surface of this the threads of the half-nuts. latter arm 19 engages the upper wall of the The invention also-consists in so mounting slot 6. The bar 17 is also provided with lugs the half-nut-carrying members or sections in 20, that will straddle an extending portion the supporting clevis or frame that when it is of the bar 8, for a purpose hereinafter appeardesired to separate these members to release ing. IO 5 the feed-screw therefrom the same may be Extending outwardly from the half-nut readily and quickly effected. 11, at each end thereof, are threaded exten- The invention also consists in providing sions 2 1 of considerably less than a semithreaded extensions from said half-nut-carcircle in cross-section, and extending berying members, respectively, the ex ensions tween the half-nuts 18 on the bar 17 is a I10 of one member coming opposite the half-nut section or sections of the other member and threaded connection 22, which is likewise of less cross-sect1on than a semicircle. Said 1 and constitut section.

extensions 2 fore each half nut said connection 22 theree considerably less than a The extensions 21 are opposite the half-nuts 18 and the threaded connection 22 is 0 It being desired use, the arms 13 a the mouth of the slot hole 4 permitting laterally that this may be effected.

member 17 is pivot-shaft l5.

21. The bar Sis tl its pivot-shaft until its half-nuts 1 nection 22 engage screw, at which time the lugs 2 the pposite the half-nut 11 for a purpose hereinafter described.

Iaving now described tures of my invention, I sh bar 8, whereby the said two all the principal feaall proceed to the put the feed-head into nd 19 are withdrawn from i 6, the elongation of the f the trunnion 7 to move The bar rotated backwardly 011 its The f eed-screw so that its thread will be ien rocked forwardly upon 8 and coliad of said feed- 0 will straddle the thre l bars are sei cured against any longitudinal movement.

The two contigu pressure come same these arms 1 forced backwardly tending to draw t wardeach other, a of the half-nuts to of the drill half-nut threads w up a corres of said to constitute con nuts, not only is greater threadb eed-screw 23, but of the said extensions 21 and assist in keeping the feed-screw vided for the f n ord being withdrawn e feed-screw placed between th a suitable device is of said trunmonsucli,

cotter-pin 24,

trunnion. This co vent the trunnion from be uld the clews-limbs 3 and l reason, flanges 26 on the 5 spread for any arms 13 and 19, latter purpose for feed-screw, and if the same ponding arms into said slot.

y providing the half-nut 1]. and tl the half-nuts 18 and in is being remove passed through a hole ous arms 13 and 19 are then entered into the V-shaped slot 6.

As the s upon the drill in using the 3 and 19 are always kept i into the said slot, thereby he said bars 8 and 17 tond so to cause the threads closely engage the thread I or the wear will be taken backward movement ear the extensions 21 from the re connection 22 between aking the same so as siderably less than halfearing prothe threads connection 22 threads clean.

ver to prevent the trunnion 7 from hole 1 when d from or ree arm members 8 and 17, provided on the outer end for instance, as a 25in said tter-pin also serves to prewithdrawn through the respectively, serving this said arms. In order to strengthen and support the open end of the slot 6, I would clevis with a bri 1 and 5, provided provide the limb 5 of the dge-piece 27, as seen in Figs.

with a slotway'28 for the passage of said flanges 26.

s will be readil y observed, when the del t vice is in use th constituting screw, will b trunnion 7 in surfaces of ti In Fig.

the e rocked the hole ie arms 13 and in eflect, constitute have shown clevis in which the limb with limb 3 views) is piv tion 1 of tl and previdii mg with said of the clovis sl otally secure ie clevis upon a st at (corresponding with hol same diameter ig the bridgepieee made a V-slot 6 and a sl slot 28) in a e upper members screw-bloc] asthe trunnion of making the slot 6 directl block 5" 8 and 17, {s for the feedrequired upon the iid the semicircular it), which arms,

a trunnion.

a modified town of 3 tcorrespiinding iowii in the other d to the body por em 3", the hole e I) being of the 7, and instead y in. the limb i") 27 l have 8 (correspond- ,Whi(:li Isocured adjacent: the free end (it the limb 5. By

this modified trunnion upon its pivo ther mod made by persons parting iroiii Having thus claim as LOW Patent- 1. A feedvided with 0 mg arrangeii icall y efleetin nut-sections.

2. In a feed-heard the combinat .ing a substantiall limbs, the

its

mounted ried by said arraii gemen t said member extending shaped 3. the

its limbs, tl

ried by said arrangement said member extend shaped provided on flanges, substaiitiall set forth.

in said cl through a slot f the clevis, s for the purpose se mounted in said c ing through a t on the ihcations oft the essential and desire t head for dril )poscd ient, i1

and m for ion of a sup hinged hinged mcm relative to r s being proi t forth.

In a feed-head for dri combination 112g a substantial of a sup ly Vsh: 2e hinged hinged mem relative s being -11. In a feed-head for the combination mg a substan limbs, the brid of the entraii bers pivotal] nut-sections bers in alter tially V cc to said slo y mounted carried by natiiig arran construction when the and 19 are withdrawn from the 7 will cause tl lescri bed nut-sections, iii alteriiat y V-shaped slot members evis, the

iid l arms 13 V-slot: (5 the ie limb i to rotate body 1 of the cle vis.

heiiiveiitioii maybe skilled in the art without depriziciples theretl'. my invention, 1 o secure by Letters ling-nmohines proeaiis for aiitoiiiathe relative adjustment of said drilling-iiiaeliiiies, iiort'iiig-clevis, hav in one of pivotally nut-sections earbers iii alternating *aeh other, each of ided with an arm ieariiig in said V- iibstantially as and lling-iiiaehiiies, portiiigelevis hav iped slot iii one of members pivi ll ally levis, the

nut-sections earbers iii alt eriiatiin Pi to each other, each of provide d with an arm,

bearing in said V- slot of the clevis, said arms being their free ends with peripheral y as and tor the purpose drilling machines,

of a supportiiig-clevis liavshaped slot in one oi its gepiece connecting the sides t, the hinged memin said clevis, the said hinged memgeinent relative to hinged members carrie d thereby, said said members being proof substantially semicircular cross-section, extending through said V-shaped slot of the clevis, substantially as and for the purpose set forth. i

5. In a feed-head for drilling-machines,

each other, each of vided with an arm the combination of a supportmg-clevis hav ing a substantially V-shaped slot in one of its limbs, the bridge-piece connecting the sides of the entrance to said slot, the hinged members pivotally mounted in said clevis, the nutsections carried by said hinged members in alternating arrangement relative to each other, each. of said members beingprovided with an arm, substantially semicircular in cross-section, extending through said V- shaped slot of the clevis, said arms being p revided on their free ends with periphera flanges, and said bridge-piece being provide with. slot permitting the passage of saie flanges, substantially as and for the purpose set forth.

6. In a feed-head for drilling-machines, the combination of a su'pporting-clevis, the

' hinged members being provided with opposed halfnut sections in alternating arrangement, and with. threaded sections opposite to said half nut tions, said threaded sect ions being less than a half-nut, substantially and for the purpose set for th. v

7. In a feed-head for drillingmachines, the combinaion of a supportingclevis, the hinged meml )t. carrie d therel )y, d hinge meml'x'rs being provided with opposed half nut sections in .tlternating arrangement, ant with threaded sec ens opposite to said halfnut sections, said threaded sections being h ss than a lr-alf-nui, together xvi; h m: ans for automatically eil't-ct'ng relative adjustment of said hinged members, substantially as an for the purpose set orth.

8. In a feed-head for drilling-machines, the combination of a supporting-clevis, the inner member having the trunnion ext en di mg from one end thereof, and journaled in the adjacentlimb of said clevis, the opposite limb of said clevis being provided with. a substantially trunnion-carrying end thereof,

V-shaped slot, the outer member said inner member, adjacent the said members being provided respectively with nutsections, and also being provided with oppositel -disposed arms, extending throug and engaging the Wall of said V-shaped slot, substantially as and for the purpose set forth. 9. In a feed-head for drilling-machines, the combination of a supporting-Clevis, the inner member having the trunnion extending from one end thereof, and journaled in the adjacent limb of said clevis, the opposite limb of said. clevis being provided with a substantially \Ishapcd slot, tl

hinged to ie outer member hinge d to ti: e said inner member, adjacent the trunnion-carrying end thereof, said members being provided respectively with nut-sections, and. also being provided with oppositely-dis- )osed arms, extending through and engaging the Wall of said \Isha pe d slot, and means for preventing longitudinal movements of said members relative to each other, substantially as and for the purpose set? forth.

10. In a feed-he ad for drilling'machines, the combination of a supper;ing-elevis, the inner member having the t'i'ulllllOll extending from one end 1 (re of, end journaled in the adjacent limb o sci d cl err is, the oppos-eit e limb of said (leyis being provided with a substantiallyV-shapedsloi tlpe outer mrm iXi'lll'tgCd to Sfiltl inner member, adjacent the trunmone nrrrrn n. WILLIAMS.

Witnesses:

Bnssm R. Mason, S. W. ARNOLD.

to af- 

